Table 4.
Diameter zone of inhibition, minimum inhibitory concentration (MIC), and minimum bactericidal concentration (MBC) of T. terrestris, T. domingensis, and R. communis extracts.
| Organism | Plant extract | Gentamicin (+ve control) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Tribulus terrestris L. | Typha domingensis Pers. | Ricinus communis L. | ||||||||
| Zone of inhibition (mm, mean ± SEM) | MIC (mg/L) | MBC (mg/L) | Zone of inhibition (mm, mean ± SEM) | MIC | MBC | Zone of inhibition (mm, mean ± SEM) | MIC (mg/L) | MBC (mg/L) | ||
| Proteus mirabilis | 11.5 ± 0.22 | 12.5 | 25 | — | — | — | — | — | — | 22.0 ± 0.05 |
| Pseudomonas aeruginosa | 24.5 ± 0.35 | 12.5 | 25 | — | — | — | 18.5 ± 0.24 | 12.5 | 25 | 20.0 ± 0.08 |
| Staphylococcus aureus | 11.5 ± 0.35 | 6.25 | 12.5 | 9.5 ± 0.36 | 500 | — | 16.5 ± 0.23 | 12.5 | 25 | 21.0 ± 0.02 |
| Streptococcus faecalis | 14.5 ± 0.34 | 12.5 | 25 | 14.0 ± 0.27 | 250 | 500 | 13.5±0.23 | 250 | 500 | 23.0 ± 0.05 |
| K. Pneumoniae | — | — | — | 8.5 ± 0.35 | 500 | — | 12.0 ± 0.06 | 250 | 500 | 18.5±0.23 |
| E.coli | 10.0 ± 0.01 | 500 | — | — | — | — | — | — | — | 17.0±0.24 |
| S. epidermidis | — | — | — | — | — | — | — | — | — | 17.0 ± 0.09 |
| S. pneumoniae | — | — | — | — | — | — | — | — | — | 25.0 ± 0.08 |
| Candida albicans | — | — | — | — | — | — | — | — | — | — |